Safety attachment for gas-burners.



E. ANDERSON. SAFETY ATTACHMENT FOR GAS BURNERS.

APPLICATION FILED JULY 19. 1915.

1,163,878. Patented Dec.14, 1915.

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EDWARD ANDERSON, 0F MINNEAPOLIS, MINNESOTA, ASSIGNOR OF ONE-HALF TONELS 1. LARSON, 6F MINNEAPOLIS, IVIINNESGTA.

SAFETY ATTACHMENT FOR GAS-BURNERS.

1,163,57&

Specification of Letters Patent.

Patented Dec. 14, 1915.

Application filed July 19, 1915. Serial No. 40,626.

To all whom it may concern Be it known that I, EDWARD ANDERSON, acitizen of the United States. residing at Minneapolis, in the county ofHennepin and State of Minnesota, have invented certain new and usefulImprovements in Safety Attachments for Gas-Burners, of which thefollowing is a specification.

My invention relates to improvements in safety attachments for gasburners, andhas for its o ject to provide an improved device which willoperate automatically to shut ofl the supply of gas in case the lightshould be blown out by some person ignorantof the nature of gas lightingor accidentally by the wind or a careless user.

In carrying out the invention I have provided for the burner a movablewing attachment arranged in such close proximity to the end of theburner as to be acted upon by the same breath of air that blows out thegas, and operative upon a valve constructed in such a way that it willbe extremely sensitive and positive in its action, so that it will bereadily and unfailingly closed by the mo tion imparted to the fan by theair blast. The invention is equally applicable to a burner of ordinaryconstruction or to a mantle, whether upright or inverted.

More particularly the invention consists in the construction,combination, and arrangement of parts hereinafter shown and described. I

In the accompanying drawings I have shown an embodiment of the inventionapplied to an ordinary upright burner.

In the drawings, Figure 1 is a sideelevation of a gas burner fitted withmy improved attachment with some parts broken away and some in sectionto show the valve construction; Fig. 2 is a front elevation of theburner with the fan and part of the valve casing broken away and thevalve mechanism in section, showing the valve in closed position; Fig. 3is a view partly in front elevation and partly in vertical section ofthe gas burner and valve, showing the valve in open position; and Fig. 4is a top View of the burner and attachment.

In the drawings 2 represents an upright burner of usual construction and3 the gas pipe leading to it. In this pipe is arranged a valve chamber 4which is here shown connected with the pipe by means of a screw threadedcoupling 5 provided interiorly With an annular shoulder 6. In thechamber is a valve plate or disk 7 having a central upwardly taperedboss 8, preferably conical or pyramidal in shape so as to terminate in apoint. The valve disk is held normally pressed forward against theannular shoulder 9 at the upper or outer end of the chamher by means ofa coil spring 10 interposed between the disk and the shoulder 6, anannular packing strip 11 being preferably inserted between the disk andthe shoulder in 1order to insure the complete closure ofthe va ve.

Rotatably supported in the casing of the valve chamber above theshoulder 9 is a horizontal pin 12. On this pin is a radially extendingtrigger 13 having a knife edge in positlon to engage and w pe the boss 8and thereby thrust the disk 7 away from its seat so as to open thevalve, as shown in Figs. 1 and 3. "When the trigger rests against theapex of the boss, the disk will be held pressed back from its seat untilthe pin 12 is turned. The pin 12 projects outwardly from y the valvechamber and upon the outwardly projected portion is a spindle 14 havingat its outer end a plurality of radial wings or fan blades 15 extendingclose enough to the burner to leave only a small clearance be tween theburner and the adjacent wings. The spindle 14 is mounted to stand in thesame plane as the trigger 13 but on the opposite side of the pin 12, sothat when the pin is turned to move the spindle into vertical positionand bring the fan close to the burner as shown in Fig. 1, the triggerwill rest against the apex of the valve boss 8 and hold the valve open.The fan blades or wings 15 are preferably of mica or other light, stiffmaterial. They may be secured to the spindle in any suitable way, but Iprefer to mount them within the radial arms 16 of a pair of metal capsor plates 17 which are apertured to fit over the spindle 14, the arms 16being preferably bent over on each side of the mica wings, so as to forma groove or channel within which the wings can be removably held.

The operation of the structure is as follows: WVhen the burner is in usethe spindle and fan are set in vertical position, as shown in Fig. 1,with the trigger 13 resting against the conical valve boss 8 to pressthe valve disk away from its seat and hold the valve open. In thisposition the gas can pass the valve freely and supply the flame at theend of the burner. If now there should be a blast of air sufficient toblow out the gas the blast will also strike the closely adjacent wings15 and oscillate the spindle 1-l, thereby turning the pin 12, andcarrying the trigger 13 off the apex of the valve boss 8. This willallow the valve disk 7 to spring forward under the pressure of itsspring 10 to close the valve. The valve will then be kept closed by thespring until the spindle is again turned by hand to vertical position,to bring the trigger 13 against the apex of the boss. It Will be seenthat the point of contact between the trigger and the boss is so smallthat the valve will be released the mement the spindle let begins totip, and that the whole attachment is so sensitive as to be operated byany blast of air strong enough to blow out the gas.

\Vhile I have here shown the invention applied to an ordinary uprightgas burner it will be evident that it is equally applicable to a mantleburner, and, by inverting the position of the fan-spindle, trigger andvalve, to an inverted light, where the supply pipe and valve chamber areabove the burner instead of below it.

I claim as my invention:

1. The combination with a gas burner and a valve chamber communicatingtherewith, of a spring pressed valve disk seating within the chamber andnormally closing the opening therethrough, a transverse pin journaled inthe casing of said chamber and projecting outwardly therefrom, said pinhaving a radial trigger within the chamber in position to engage anddepress the valve disk when the pin is turned, a spindle mounted uponthe outwardly projecting portion of the pin, said spindle and triggerextending in opposite radial directions from the pin, and a fan carriedby said spindle adjacent to the burner, whereby when the spindle isturned into vertical position the fan will be in close proximity to theburner and the trigger will rest against the valve disk and hold thevalve open; 7

2. The combination witha gas burner and a valve chamber communicatingtherewith, of a spring pressed valve disk seating within the chamber andhaving an upwardly tapered boss, a transverse pin journaled in thecasing of said chamber and projecting outwardly therefrom, a radialtrigger carried by the pin within the chamber in position to wipe theboss and thereby depress the valve disk when the pin is turned, aspindle mounted upon the pin outside the chamber, said spindle andtrigger extending in opposite radial directions from the pin, and a fancarried by said spindle, whereby when the spindle is turned intovertical position the fan Will be in close proximity to the burner andthe trigger will rest against the apex of the boss of the depressedvalve disk and hold the valve open. 3. The combination with a gas burnerand a valve chamber communicating therewith, of a spring pressed valvedisk seating with in the chamber and normally closing the openingtherethrough, a transverse pin journaled in the casing of said chamberand projecting outwardly therefrom, a radial trigger carried by the pinwithin the chamber in position to engage and depress the valve disk whenthe pin is turned, and a radial spindle mounted upon the pin outside thechamber and having a fan at its outer end, said spindle and triggerbeing so positioned that when the spindle is in vertical position thefan will be in close proximity to the burner and the trigger will restagainst the valve disk and hold the valve open.

In testimony whereof I affix my signature in presence of two witnesses.

EDWARD ANDERSON. Witnesses:

ARTHUR P. Lo'rHRoP, H. SwANsom' Copies of this patent may be obtainedfor five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

